| 摘要 |
The converter is designed to eliminate the channel number reduction and the N/F frequency limitation. The converter comprises; a low pass filter(34); the first and the second mixer(35,41); the first and the second IF amplifier(39,454,45); back side band pass filters(38,40,43,46); an RF amplifier inputting the high and low band signal; a duplexer located on the front side of the low pass filter.
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